Manami, who had been seriously considering marriage with her boyfriend, decides to take a healing trip to a quiet hot spring resort after their breakup, her heart still wounded. It is around the time of the Mid-Autumn Harvest Moon. After warming her body in the soothing waters, Manami gazes at the moon, cooling her skin under the night air—when suddenly, a staff member dressed in work robes attacks her. Her body, lonely and aching from nights of sleeping alone since the breakup, gradually begins to accept the man's touch, despite her initial resistance. Unable to suppress her desires any longer, she finally gives in completely. Within the tranquil, intimate atmosphere of warmth and stillness, a new emotion begins to awaken.